Chinese soil element background value
WebNov 10, 2024 · The average content of Cd in some surface water sediments was 0.64 mg/kg, which exceeded the risk screening values for soil contamination of agricultural land of China and was 17.1 times the background value of soil environment in Inner Mongolia; the average content of As was 16.64 mg/kg, which exceeded the soil quality standard of … WebMar 26, 2024 · The results indicate the following: (1) The concentration of Cd and Pb in soil exceed the background value of Chinese soil elements. (2) Cd is significantly …
Chinese soil element background value
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http://en.cgsjournals.com/article/doi/10.11720/wtyht.2024.0302 WebApr 11, 2024 · The pH of the original soil was 7.96, the value of organic matter was 14.82 g/kg, the value of CEC was 17.34 cmol/kg, the exchange acid was 54.30 mmol/kg and the background concentration of nickel ...
http://www.zghjkx.com.cn/EN/abstract/abstract17562.shtml WebAbstract. Mean concentrations of 62 elements, pH, organic matter and grain size have been computed for soil samples from 4,095 locations …
WebJun 22, 2024 · The average values of Cu, Zn, Pb, Cd, and Ni are 2.92 times, 2.19 times, 6.36 times, 7.78 times, and 1.34 times of the background values of soil elements in … WebJun 24, 2024 · The 1994 map of Chinese soil mercury distribution (Fig. 1a) was obtained from the atlas titled “The atlas of soil environmental background value in the People’s Republic of China” 1994, page …
WebWhat is the meaning of background value of soil element in Chinese and how to say background value of soil element in Chinese? background value of soil element Chinese meaning, background value of soil element的中文,background value of soil element的中文,background value of soil element的中文,translation, …
WebDec 1, 2024 · In 1990, a large-scope and systematic survey for SEBVs was carried out across the whole of China, covering all 29 provinces, cities and autonomous regions. These survey data were summarized in a book entitled China Soil Element Background Value (China National Environmental Monitoring Centre, 1990). From 2005, the MEP-PRC and … howard castilloWebDec 19, 2024 · China National Environmental Monitoring Center (1990) Chinese soil element background value. China Environmental Science Press, Beijing. Google Scholar Gholizadeh A, Borůvka L, Saberioon MM et al (2015) Comparing different data preprocessing methods for monitoring soil heavy metals based on soil spectral features. how many imitrex can you dispense per monthWebApr 10, 2024 · The third group of elements consisted of As and Pb. The average concentration of As was much higher than the background value, and the pollution level and ecological risk caused by As were higher. The concentration of Pb was slightly lower than the background value (21.4 mg kg −1), and its corresponding impact was smaller. … howard cattleWebBACKGROUND CONCENTRATIONS OF ELEMENTS 701 Figure 1. Number of soil and surficial matter sampling locations in the "administrative" provinces of mainland China. … howard cassady ohio stateWebDec 3, 2024 · The background value is defined as the normal concentration of an element in an unpolluted natural environment, the basis for evaluating the pollution degree and ecological risk of a particular element in the soil and sediment (Fukue et al. 2006; de Paula Filho et al. 2015). howard catchings insurance agencyWebThe results showed that the range of the environmental background concentrations of REE in topsoil of Shenzhen was 23.66~1246.26mg/kg, the arithmetic average value was 285.99mg/kg, which was higher than that in soil of China and Guangdong province. The top soil of Shenzhen was enriched-type of light rare earth element, and the spatial ... how many imitrex in a boxWebDec 15, 2024 · We mainly discuss on a macro-scale the variation features of Chinese soil’s background value versus reference value, including:① to study the ratio feature … howard castloo